US1278566A - Hand-lever set-works. - Google Patents

Description

W. H. TROUT.

HAND LEVER SET WORKS.

APPLICATION FILED JUNE I8. I91?- Patented Sept. 10, 1918.

2 SHEETS-SHEET I.

w. H. TROUT. HAND LEVER SET WORKS.

APPLICATION FILED JUNE l8. 19!]- 1 $78,566. Patented Se 0, 1918.

2 SHEET SET 2.

WILLIAM HENRY TROUT, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS MANUFACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE.

HAND-LEVER SET-WORKS.

To all whom it may concern:

Be it known that I, WILLIAM HENRY TROUT, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement in Hand-Lever Set-WVorks, of which the following is a specification.

This invention relates to improvements in the construction of sawmill machinery and has particular relation to improvements in the construction of manually operable sawmill setworks.

An object of the invention is to provide a sawmill setworks which is simple in construction and efiicient in operation. One of the more specific objects is to provide a setworks in which the various parts are readily accessible and removable for repairs or renewal. Another object is to provide a setworks which is readily convertible from a right-hand to a left-hand type and vice versa. A further object is to provide a setworks in which the dial plate, dimension gage and pawl lifter are located at a considerable distance above the carriage, so that the setter may readily observe and manipulate these devices and at the same time have a clear view of the cut. Still another object is to provide means for producing uniform motion of the advancing pawls. A further object is to provide a simple and rigid construction of pawls and pawl carriers, together with simple and efficient means for lifting the pawls while receding the knees. Still another object is to provide a setworks which is compact, relatively light and rigid in construction, the present setworks requiring only about one-half of the space ordinarily occupied by similar devices.

The present invention also has for its obj ect to improve various details of construction of the setworks disclosed in my prior Patent 787,135, granted April 11 1905.

A clear conception of an embodiment of the several features of the invention may be had by referring to the drawings accompanying and forming a part of this specification, in which like reference characters designate the same or similar parts in the various views.

Figure 1 is a side elevation of a manually actuated setworks.

Fig. 2 is a rear elevation of a manually actuated setworks.

Specification of Letters Patent. Patented Sept 10, 1918 Application filed June 18, 1917.

Serial No. 175,956.

Fig. 3 is a top View of a manually actuated setworks.

Fig. 4 is a fragmentary transverse vertical section through a manually actuated set-- works, the section being taken along the vertical plane of the axis of the set shaft.

Fig. 5 is an enlarged fragmentary vertical section through a manually actuated setworks showing details of construction of the pawl actuating and stopping mechanisms. v

Fig. 6 is an enlarged fragmentary vertical section through a manually actuated setworks showing details of construction of the pawl lifting and stopping mechanisms, and showing a diagram of the dimension gage.

lVhile the various features of this invention are disclosed herein as applied to a manually actuated setworks, it will be apparent that these features may readily be applied to the various forms of so-called power setworks. Such application is within the scope of the present invention.

The hand lever setworks comprise a lower main frame 52 mounted upon the carriage 29 and having rotatably mounted thereon two parallel horizontal shafts 23, 20, and an upper frame 3 detachably supported upon the frame 2 by means of a guard rod 4 and supporting rods 5.

The set shaft 23 is detachably secured to the mid portion of the frame 2 by means of removable bearing caps 15, and has opposite ends projecting beyond the frame 2 and adapted for connection to the knee-advancing mechanism, not shown. Left and right ratchet wheels 31, 33 respectively, have hubs of considerable length engaging and keyed to the set shaft 23 between the caps 45, see Figs. 4, 5 and 6. A bevel gear 36 is also. keyed to the set shaft 23 at a point adja cent the hub of the left ratchet wheel 31, being rotatable with the set shaft 23 and the ratchet wheels 31, 33. Left and right pawl carriers 37 38 are swingably mounted upon the hubs of the ratchet wheels 31, 33 respectively, these carriers being freely rotatable relatively to the ratchet wheels. The left pawl carrier 37 has a pawl 26 pivoted thereto and provided with teeth which are engageable with the teeth of the ratchet wheel 31. The right pawl carrier 38 has a pawl 25 pivoted thereto and provided with teeth which are engageable with the teeth of the ratchet wheel 33. The pawl carriers 37 38 are provided with counterweights 28 detachably secured to the carriers and located diametrically opposite to the pawls 26, 25. The pawls 26, 25 are provided with adjustable stops 52, 53 respectively, located in the adjacent carriers 37, 38 respectively. A gage lever 10 is swingable upon the set shaft 23 adjacent the right ratchet wheel 33 and has a bearing on each side of this ratchet wheel, the right bearing being directly upon the shaft 23 and the left bearing being upon a short sleeve keyed to the shaft intermediate the ratchet wheels 31, 33. The gage lever 10 has thereon an abutment surface 51 which is in alinement with the right pawl 25 and forms a stop for this pawl.

The set lever shaft 20 is detachably secured to the rear portion of the frame 2 by means of removable bearing caps 46, and

has opposite ends projecting beyond the frame 2 and adapted for attachment thereto of a set lever 9. Upper and lower. gear segments 18, 17 the latter of which is keyed to the set lever shaft 20 and the former of which is relatively angularly adjustably fixed to the shaft 20 by means of adjustable segment connecting means 19, are mounted upon the shaft 20 between the bearing caps 46 and are in alinement with the ratchet wheels, 31, 33 respectively. Upper and lower rack bars 15, 16 have teeth engaging the gear segments 18, 17 respectively, and have rear ends pivotally connected to the pawls 26, 25 respectively. The lower rack bar 16 bears upon a lower guide roller 22 mounted on the frame 2. The upper rack bar 15 is guided by an adjustable roller 21 mounted upon a bracket which is vertically adjustably secured to an extension of the frame 2.

The frame 2 has mounted therein two parallel spaced bolts 47, .48 which form guides for the pawl lifting bracket 24, see Fig. 6. The pawl lifting bracket 24 is provided with side flanges 56, 57, engageable with projections 49, 50 of the pawls 26, 25, respectively. The pawl lifting bracket 24 is secured to the lower extremity of a pawl lifting rod 8 the upper end of which engagesa pin 39 eccentrically mounted upon an end of a cross shaft 12. The cross shaft 12 is rotatably supported in the upper bracket 3 and has a rod 11 passing transversely through an opening adjacent the end thereof opposite to the pin 39. The rod 11 has a weight 30 secured to one end thereof and has its opposite end projecting transversely beyond the shaft 12, and engageable with a stop 13 on the'upper frame movement of the dial plate 6. The dial plate 6 is provided at its periphery with an internal gear which meshes with a bevel gear 35 secured to the upper end of an upright transmission shaft 7. The transmission shaft 7 is mounted in detachable bearings secured to the upper and lower frames 3, 2 and has a bevel gear 34 secured to the lower end thereof which meshes with the bevel gear 36 on the shaft 23, see Figs. 1, 2, 3, and 4.

The upper frame 3 is provided with a gage segment 32 having a series of notches and openings adjacent the lower edge thereof for adjustably positioning the gage lever 44 engaging a lug 60 on the frame 2, see

Fig. 5. A cross shaft 58 having a rectangular section at a portion thereof which is in alinement with the left pawl 26 is rotatably mounted in bearing on the adjustable bracket 43. A notched block 59 is fixed to the shaft 58 in line with a hook 27 pivoted upon the left carrier 37. A block 41 also secured to the shaft 58 engages leaf spring 42 secured to the bracket 43 as shown in Fig. 5. The rear end of the hook 27 is provided with a surface engaging the leaf spring 40 secured to the left carrier 37. The surfaces of the rectangular portion of the shaft 58 are engageable with the end of the pawl 26 and form a stop therefor.

During the normal operation of the setworks, and assuming all parts to be properly adujsted and set for a predetermined condition of operation, if it is desired to advance the knee, the set lever 9 must first be moved in a clockwise direction from the po sition shown in Figs. 1 and 5. Upon thus moving the set lever 9, the gear segments 17, 18 are moved in a like direction causing the upper rack bar 15 to move toward the right and causing the lower rack bar 16 to move toward the left. Movement of the. lower rack bar 16 toward the left, causes the right pawl 25 to swing away from the stop 53 and about its pivot upon the carrier 38, the carrier 38 being momentarily delayed in its movement by the inertia, of the weight 28 and of the carrier itself, thus bringing the teeth of the ratchet 25 into engagement with the ratchet wheel 33. Movement of the upper rack bar 15 toward the right withdraws the teeth of the ratchet 2.6 from the teeth of' the ratchet wheel 31, the carrier 37 remaining momentarily stationary due to the inertia of the carrier and of the corresponding weight 28 thereof. Upon continued movement of the set lever 9, the pawl 25 and carrier 38 are moved in an anticlockwise direction as viewed in Fig. 5, causing the ratchet wheel 33 and the set shaft 23 to move in a like direction. Simultaneously with this motion of the right carrier 38 and pawl 25, the left carrier 37 and pawl 26 are moved in a clockwise direction with the pawl 26 in engagement with the stop 52. When the set lever 9 has been moved in a clockwise direction, to such an extent that the end of the pawl 25 engages the abutment surface 51 of the gage lever 10, the mechanism is stopped and the motion of the ratchet wheel 33 is arrested. In order to continue the motion of the set shaft 23, it is necessary to swing the lever 9 in the opposite or anticlockwise direction, thereby causing the pawl 25 to disengage the ratchet wheel 33 and causing the pawl 26 to move into engagement with its ratchet wheel 31 and to move this ratchet wheel and the set shaft 23 in an anticlockwise direction. The swinging of the set lever 9 in an anticlockwise direction, can be continued only until the pawl 26 abuts against the adjacent surface of the rectangular portion of the shaft 58, when the motion of the ratchet wheel 31 is arrested. It will thus be noted that by continued back and forward movement or oscillation of the set lever 9, the set shaft 23 may be moved continuously in an anticlockwise direction, the pawl 26, 25 alternately engaging and disengaging their ratchet wheels 31, 33 respectively, to produce such continuous motion of the set shaft.

With the mechanism set as shown in Fig. 5, as the carrier 37 is moved in a clockwise direction, the hook 27 engages the adjacent notched corner of the block 59 and causes rotation of this block 59 through an angle of 90 degrees. This motion of the shaft 58 exposes an abutment surface thereof to the end of the pawl 26, which is nearer the axis of the shaft 58 than the surface previously exposed. As the pawl 26 moves toward this newly presented abutment surface of the shaft 58, it will be permitted to travel a greater distance in an anticlockwise direction than was previously permitted, thus rotating the set shaft 23 a trifle farther. As the block 59 is rotated by the hook 27 the spring 42 engages the successively presented sides of the block 41 and holds the shaft 58 firmly in its successive new positions. The position of the shaft 58 maybe adjusted by manipulating the set screw 44, thereby moving the bracket 43 relatively to the frame 2. The purpose of the shaft 58 and co6perating mechanism is toobtain a fine adjustment whereby advances of the log of one thirtysecond of an inch may be secured, whereas the ordinary setting mechanism provides adjustments of one sixteenth of an inch only. If it i desired to prevent rotation of the shaft 58 by the hook 27, the hook may be swung about its pivot into a substantially upright. position when the spring 40 will engage the back surface of the hook 27 and will so retain the same.

If it is desired to withdraw the pawls 26, 25 from their ratchet wheels 31, 33 in order to permit free rotation of the set shaft 23 in a clockwise direction thereby permitting free receding of the knees, this may be done by swinging the rod 11 and weight 30 in a clockwise direction as viewed in Fig. 1 until rod 11 engages the top 13. This movement of the rod 11 causes the shaft 12 ,to rotate and moves the eccentricpin 39 upwardly. The upward motion of the pin 39 moves the rod 8 and pawl lifting bracket 24 upwa'rdly, the bracket 24 moving upon the parallel bolts 47, 48 and the flanges 56, 57 engaging the pawl projections 49, 50 respectively and moving the pawls 26, 25 upwardly against their respective stops 52, 53. The extent of lifting of the pawls 26, 25 may be readily varied by adjusting the rod 8 relatively to the bracket 24 and by adjusting the stops 52 53.

If it is desired to vary the thickness of the boards being cut, this may be accomplished by varying the position of the gage lever 10. By moving the gage lever 10 in a clockwise direction as viewed in Fig. 6,

and causing the locking element 54 thereof to engage a different notch in the dimension gage segment 32, the abutment surface 51 will be moved to a position wherein the limits of swing of the set lever 9 are changed. The setting of the knee after each cut involves one forward and one backward movement of the set lever 9, and the extent of advancement of the knee due to such manipulation of the lever 9 will always be equal. The dial plate 6 indicates the position of the knees.

It will thus be noted that by providing removable caps 45, 46 for the shafts 23, 20 respectively, these shafts may be readily removed without disturbing the other elements of the set works. The bearings for the shaft 7 also being made removable from the frames 2, 3 this shaft and the gears associated therewith may be readily removed. The entire upper portion of the set works may be removed from the lower frame 2 without disturbing the position of the lower elements, since the elements associated with the lower frame 2 are all; detachably connected to this frame.

The setworks may be readily converted from a right-hand to a left-hand type and vice versa, by removing the set lever 9 from one end of the shaft 20 and securing the same to the opposite end thereof and by coupling the corresponding end of the shaft 23 to the knee-actuating mechanism.

By locating the dial plate 6, manipulating end of the gage lever 10, and pawl lifting rod 11 a considerable distance above the carriage 29, these elements may be readily ob served and manipulated and at the same time giving the operator a clear view of the cut. The guard 4 prevents injury to the operator due to displacement of a log.

The provision of rack bars 15, 16 andgear segments 18, 17 cooperating therewith, in place of the ordinary cranks heretofore utilized, produces uniform motion of the pawls 26, 25. The adjustable means 19 permit relative angular adjustment of the segments 18, 17, thereby permitting relative angular adjustment of the pawls 26, 25 about the set shaft 23.

The mechanism for withdrawing the pawls to permit receding of the knees is readily manipula'ble and effectively serves its purpose. The entire mechanism is compact and in actual construction is provided with covers at the various places where moving mechanisms would otherwise be exposed.

It should be understood that it is not desired to be limited to the'eXact details of construction herein shown and described, for obvious modifications may occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a set shaft, a' ratchet wheel secured thereto, a pawl engageable with said ratchet wheel, a rack associated with said pawl, a second shaft, gear means secured to said second shaft and meshing with said rack, and means for moving said second shaft.

In combination, a set shaft, ratchet means secured thereto, a pair of pawls engageable with said ratchet means, a rack associated with each of said pawls, a second shaft, means for moving said shaft, a pair of gear segments movable by said second shaft and meshing with said racks, and means for angularly relatively adjusting said gear segments.

3. In combination, a set shaft, ratchet means secured thereto, a pair of pawls engageable with said ratchet means, a rack associated with each of said pawls, a second shaft, means for moving said shaft, a gear segment secured directly to said second shaft, a second gear segment. mounted upon said second shaft, and adjustable means connecting said gear segments.

4. In combination, a set shaft, ratchet means secured thereto, pawls engageable with said ratchet means, racks associated with said pawls, antifriction means for guiding said racks, gear means mesh-ing with said racks, and means for moving said gear means.

5, In combination, a set shaft, ratchet means secured thereto, pawls. engageable messes with said ratchet means, means movably supporting said pawls, means common to and directly .engageable with all of said pawls for simultaneously moving the same out of engagement with said ratchet means, and parallel guiding means for said moving means.

6. In combination, a set shaft, ratchet means secured thereto, pawls engageable with said ratchet means, means movably supporting said pawls, an element engageable with said pawls to move the same out of engagement with said ratchet means, a shaft, and eccentric means associated with said shaft for moving said element.

7. In combination, a set shaft, ratchet means secured thereto, pawls engageable with said ratchet means, means movably supporting said pawls, an element engageable with said pawls to move the same out of engagement with said ratchet means, parallel guiding means for said element, a shaft, and eccentric means associated with said shaft for moving said element.

8. In combination, a set shaft having opposit ends formed for connection with elements to be operated by said shaft, ratchet means secured to said shaft, pawls engageable with said ratchet means, a second shaft having opposite similar ends, a train of mechanism connecting said pawls and said second shaft, and actuating means for said second shaft coiiperable with either end thereof.

9. In combination, a. set shaft, ratchet means secured thereto, pawls engageable with said ratchet means, a second shaft hav ing opposite similar ends, gearing connecting said pawls and said second shaft, and actuating means for said second shaft cooperable with either end thereof.

10. In combination, a set shaft, ratchet means secured thereto, a pair of pawls e11- gageable with said ratchet means, means for moving said pawls, and an adjustable positive stop for each of said pawls.

11. In combination, a set shaft, ratchet means secured thereto, a pair of pawls engageable with said ratchet means, means for moving said pawls, a lever adjustably supported upon said set shaft, means for looking said lever in an adjusted position, and. a positive stop for one of said pawls associated with said lever.

12. In combination, a set shaft, a ratchet wheel secured thereto, a pawl engageable with said ratchet wheel, means for moving said pawl, and a positive stop for said pawl, said stop being mounted upon said set shaft and engaging said shaft on opposite sides of said ratchet wheel.

13'. In combination, a frame, a set shaft mounted therein, ratchet means secured to said shaft, a pair of pawls engageable with said ratchet means, means for moving said l st ' pawls, and a positive stop for each of said pawls, both of said stops being adjustable relatively to said frame.

14. In combination, a frame, a set shaft mounted therein, ratchet wheels secured to said shaft, pawls engageable with said ratchet Wheels, means for moving said pawls,

a positive stop for one of said pawls adjustably secured to said frame, and a positive stop for another of said pawls mounted upon said set shaft.

15. In combination, a frame, a set shaft mounted therein, a pair of ratchet wheels secured to said shaft, a pawl engageable with each of said ratchet wheels, means for moving said pawls, a positive stop for one of said pawls adjustably secured to said frame, and a lever engaging said set shaft on opposite sides of the other of said pawls and forming a positive stop for said pawl.

16. In combination, a set shaft, ratchet means secured thereto, a pawl engageable with said ratchet means, a pawlv carrier swingable about said shaft, a weight for counterbalancing the weight of said carrier, and means for moving said carrier and said pawl.

17 In combination, a set shaft, a pair of ratchet wheels secured thereto, a pawl engageable with each of said ratchet wheels, a carrier for each of said pawls, each of said carriers having bearings at both sides of its ratchet wheel, and means for moving said pawls and said carriers.

18. In combination, a set shaft, a pair of ratchet Wheels secured thereto, a pawl engageable with each of said ratchet wheels, a carrier for each of said pawls, each of said carriers having bearings on the adjacent ratchet wheel at opposite'sides thereof, and means for moving said pawls and said carriers.

19. In combination, a lower frame, a set shaft mounted therein, pawl and ratchet mechanism for moving said set shaft, an upper frame mounted above said lower frame, a dial plate operable by said set shaft and mounted upon said upper frame, pawl lifting mechanism mounted upon said upper frame, and adjustable mechanism for stopping said set shaft associated with said upper frame.

In testimony whereof, the signature of the inventor is aflixed hereto.

WILLIAM HENRY TROUT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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